Validation and application of cellular automaton model for microstructure evolution in IN718 during directed energy deposition

Lang Yuan,Siyeong Ju,Shenyan Huang,Ian Spinelli,Jiao Yang,Chen Shen,Luke Mohr,Hamed Hosseinzadeh,Anindya Bhaduri, Marissa Brennan,Changjie Sun,Alex Kitt

Computational Materials Science（2023）

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摘要

•A highly parallel 3D cellular automation model studies nucleation and grain growth for directed energy deposition.•The calibrated model accurately predicts grain size and misorientation for IN718 with quantitative validation.•Coupled model predicts solidification behaviors, including remelting, epitaxial growth, and columnar-to-equiaxed transition.•Multiple-track multiple-layer simulation captures and explains sandwich-patterned structures with fine grains between layers.

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关键词

microstructure evolution,cellular automaton model,energy deposition,in718

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